io.netty/netty-codec-http2: HTTP/1 absolute-form Host mismatch is translated to HTTP/2 :authority, overriding the request-target authority

A flaw was found in Netty. A remote unauthenticated attacker can exploit a vulnerability in Netty's HTTP/1 to HTTP/2 conversion process. When an HTTP/1 request includes both an absolute-form request-target and a conflicting Host header, Netty incorrectly prioritizes the Host header for the HTTP/2...

io.netty/netty-codec-http2: Netty: HTTP/2 header field values are not validated by default (CR/LF/NUL passthrough)

A flaw was found in Netty's HTTP/2 stack. This vulnerability allows a remote attacker to inject prohibited characters, such as NUL, Line Feed, and Carriage Return, into HTTP/2 header field values due to insufficient validation. When these values cross an HTTP/2 to HTTP/1.1 translation boundary,...

io.netty/netty-codec-http2: HTTP/1 authority-form CONNECT is translated to malformed HTTP/2 CONNECT with Host-controlled :authority

A flaw was found in Netty's HTTP/2 codec. When converting HTTP/1 CONNECT requests to HTTP/2, the component incorrectly uses the Host header instead of the CONNECT authority-form request-target for the tunnel authority. A remote attacker can exploit this by supplying a different Host header, leadi...

io.netty/netty-codec-http2: io.netty/netty-codec-http3: Netty: HTTP/2 and HTTP/3 Extended CONNECT requests are downgraded as regular CONNECT requests

A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 Extended CONNECT requests. Netty's HTTP-object conversion path incorrectly processes these requests as regular HTTP/1.1 CONNECT requests, leading to a loss of critical...

io.netty/netty-codec-http2: HTTP/1 absolute-form Host mismatch is translated to HTTP/2 :authority, overriding the request-target authority

A flaw was found in Netty. A remote unauthenticated attacker can exploit a vulnerability in Netty's HTTP/1 to HTTP/2 conversion process. When an HTTP/1 request includes both an absolute-form request-target and a conflicting Host header, Netty incorrectly prioritizes the Host header for the HTTP/2...

io.netty/netty-codec-http2: Netty: HTTP/2 header field values are not validated by default (CR/LF/NUL passthrough)

A flaw was found in Netty's HTTP/2 stack. This vulnerability allows a remote attacker to inject prohibited characters, such as NUL, Line Feed, and Carriage Return, into HTTP/2 header field values due to insufficient validation. When these values cross an HTTP/2 to HTTP/1.1 translation boundary,...

io.netty/netty-codec-http2: HTTP/1 authority-form CONNECT is translated to malformed HTTP/2 CONNECT with Host-controlled :authority

A flaw was found in Netty's HTTP/2 codec. When converting HTTP/1 CONNECT requests to HTTP/2, the component incorrectly uses the Host header instead of the CONNECT authority-form request-target for the tunnel authority. A remote attacker can exploit this by supplying a different Host header, leadi...

Denial-Of-Service (DoS)

Http4s is vulnerable to a denial-of-service DoS. The vulnerability is due to improper enforcement of HTTP/2 concurrent stream limits, which allows an unauthenticated attacker to create an unbounded number of streams and consume heap memory until exhaustion...

Denial-of-Service (DoS)

Http4s is vulnerable to a Denial-of-Service DoS. The vulnerability is due to HTTP/2 flow-control windows being replenished based on network-received bytes while DATA is stored in an unbounded channel, which allows an attacker to send HTTP/2 request bodies faster than the application consumes them...

OPENSUSE-SU-2026:21901-1 Security update for libsoup

This update for libsoup fixes the following issues: - CVE-2026-85197: heap use-after-free in HTTP/2 client ondataread via GOAWAY during body upload bsc1279238. - CVE-2026-85534: heap buffer overflow in SoupSession through ondatasourcereadcallback via SETTINGS frame with crafted INITIALWINDOWSIZE...

SUSE-SU-2026:23848-1 Security update for libsoup

This update for libsoup fixes the following issues: - CVE-2026-85197: heap use-after-free in HTTP/2 client ondataread via GOAWAY during body upload bsc1279238. - CVE-2026-85534: heap buffer overflow in SoupSession through ondatasourcereadcallback via SETTINGS frame with crafted INITIALWINDOWSIZE...

SUSE-SU-2026:23866-1 Security update for libsoup

This update for libsoup fixes the following issues: - CVE-2026-85197: heap use-after-free in HTTP/2 client ondataread via GOAWAY during body upload bsc1279238. - CVE-2026-85534: heap buffer overflow in SoupSession through ondatasourcereadcallback via SETTINGS frame with crafted INITIALWINDOWSIZE...

SUSE-SU-2026:23857-1 Security update for libsoup

This update for libsoup fixes the following issues: - CVE-2026-85197: heap use-after-free in HTTP/2 client ondataread via GOAWAY during body upload bsc1279238. - CVE-2026-85534: heap buffer overflow in SoupSession through ondatasourcereadcallback via SETTINGS frame with crafted INITIALWINDOWSIZE...

io.netty/netty-codec-http2: Netty: Denial of Service via HTTP/2 DATA frame memory leak

A flaw was found in Netty, a network application framework. A remote, unauthenticated attacker can exploit this vulnerability by sending specially crafted HTTP/2 DATA frames to applications that use Netty and have HTTP/2 content decompression enabled. This can lead to memory exhaustion, causing t...

tomcat-coyote: Apache Tomcat: HTTP/2 request headers not validated

Apache Tomcat did not validate HTTP/2 request headers, triggering unexpected application behavior, as applications may presume that header values exposed through the Servlet API would be valid...

CVE-2026-12611

A flaw was found in Jetty. A remote attacker can exploit a race condition in the server's handling of HTTP/2 RSTSTREAM and GOAWAY frames. This can lead to blocking writes that are never unblocked, causing all server threads to become unresponsive. The primary impact is a Denial of Service DoS for...

Security update for libsoup

This update for libsoup fixes the following issues: CVE-2026-85197: heap use-after-free in HTTP/2 client ondataread via GOAWAY during body upload bsc1279238. CVE-2026-85534: heap buffer overflow in SoupSession through ondatasourcereadcallback via SETTINGS frame with crafted INITIALWINDOWSIZE...

SUSE-SU-2026:4274-1 Security update for libsoup

This update for libsoup fixes the following issues: - CVE-2026-85197: heap use-after-free in HTTP/2 client ondataread via GOAWAY during body upload bsc1279238. - CVE-2026-85534: heap buffer overflow in SoupSession through ondatasourcereadcallback via SETTINGS frame with crafted INITIALWINDOWSIZE...

SUSE-SU-2026:4273-1 Security update for libsoup

This update for libsoup fixes the following issues: - CVE-2026-85197: heap use-after-free in HTTP/2 client ondataread via GOAWAY during body upload bsc1279238. - CVE-2026-85534: heap buffer overflow in SoupSession through ondatasourcereadcallback via SETTINGS frame with crafted INITIALWINDOWSIZE...

CVE-2026-73548: Inconsistent Interpretation of HTTP Requests

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy forwards data for a configured non-WebSocket HTTP upgrade before the upstream accepts the upgrade. An unauthenticated HTTP/2 client can place a complete...